commit b40e0f7731ecf0ea4c55667a9c980586f9b229dd
author Jonathan Yong <10walls@gmail.com> Mon Mar 07 18:20:15 2016 +0800
committer Jonathan Yong <10walls@gmail.com> Mon Mar 07 18:24:34 2016 +0800
tree c7ddf453dd4037edcb9c95b180007059e6eb53b6
parent c407d542b966b02e17d6856e3cef47e7d21041e0

Reset thread floating point settings on new thread

This should make FP operations across thread somewhat consistent.
Patch approved by Kai.

(cherry picked from commit d82c6defa723b6e7986091ce0fb74da544b9e0f6)

mingw-w64-crt/crt/tlssup.c

diff --git a/mingw-w64-crt/crt/tlssup.c b/mingw-w64-crt/crt/tlssup.c
index 16a602f..b1db2ed 100644
--- a/mingw-w64-crt/crt/tlssup.c
+++ b/mingw-w64-crt/crt/tlssup.c
@@ -29,6 +29,7 @@
 #endif
 
 extern WINBOOL __mingw_TLScallback (HANDLE hDllHandle, DWORD reason, LPVOID reserved);
+extern void __cdecl __MINGW_NOTHROW _fpreset (void);
 
 #define FUNCS_PER_NODE 30
 
@@ -95,6 +96,7 @@
       return TRUE;
     }
 
+  _fpreset();
   ps = (uintptr_t) &__xd_a;
   ps += sizeof (uintptr_t);
   for ( ; ps != (uintptr_t) &__xd_z; ps += sizeof (uintptr_t))